Cement Kiln For Sale

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Cement Kiln Introduction

Cement kiln is a large cylindrical rotary kiln used for dry and wet cement clinker production, installed at an incline and rotating so that the material moves inside the kiln and undergoes high temperature calcination at the same time.

The kiln converts cement raw material (a mixture of limestone, clay, etc.) into cement clinker (mainly composed of calcium silicate) at high temperatures, providing semi-finished products for subsequent grinding into cement.

Cement kilns are widely used in metallurgy, chemical engineering, construction refractories, environmental protection and other industries.

Cement Kiln Classification

Cement rotary kilns are categorized into Dry rotary kilns and Wet rotary kilns.

Dry rotary kilns can make raw meal with a moisture content of less than 1%. The advantage is that it is more energy efficient than the wet rotary kiln. The disadvantage is that the ingredients in the mix may not be homogeneous.
The advantage of a wet rotary kiln is that the good fluidity of the slurry results in a more uniform clinker quality, which improves the quality of the clinker. However, wet kilns need to evaporate a large amount of water in the slurry, and thermal energy consumption accounts for more than 40% of the total.
Dry kilns have become absolutely mainstream due to their significant energy-saving advantages.

Cement Kiln Design Principle

Cement kiln is an important equipment for dry and wet process cement production line. Cement kiln mainly consists of cylinder, transmission system, supporting device, fuel device, preheating system and cooling machine.

Cement rotary kilns are micro-operated at high temperatures. The rotation of the cylinder drives the raw materials to tumble and move slowly towards the kiln head to ensure adequate mixing and uniform heating. Fuel combustion produces high temperature gas flow and raw material countercurrent contact, in order to complete the process of water evaporation, carbonate decomposition, solid-phase reaction and liquid-phase sintering. Exhaust gas waste heat recovery is realized through preheater and cooler to reduce energy consumption.

Dry Kiln Technical Parameters

Dimension(m)	Capacity(t/d)	Slope(%)	Catch wheel	Support number	Power(kw)	Rotate speed(r/min)
Φ2.8/2.5×44	300	3.5	Mechanical	3	55	0.445-2.22
Φ3.2×50	1000	3.5	Hydraulic	3	160	0.36-3.57
Φ3.5×54	1500-1800	4	Hydraulic	3	220	0.39-3.9
Φ4×60	2500	4	Hydraulic	3	315	0.41-4.07
Φ4.8×74	5000	4	Hydraulic	3	630	0.35-4
Φ6.0×95	10000	4	Hydraulic	3	950×2	Max 5

Wet Kiln Technical Parameters

Dimension(m)	Capacity(t/d)	Slope(%)	Catch wheel	Support number	Power(kw)	Rotate speed(r/min)
Φ3.1/2.5×78	200	3.5	–	4	90	0.5-1.5
Φ3.0×88	260	3.5	–	5	90	-1.74
Φ3.0×100	300	4	–	5	110	-1.74
Φ3.3×118	400	3.5	Hydraulic	6	125	-1.45
Φ3.3×125	500	3.5	Hydraulic	6	160	-1.45
Φ3.5×145	700	3.5	Hydraulic	6	90×2	-1.38

Cement Kiln Advantages

High efficiency: cement rotary kiln has stable function, low energy consumption, high output and easy operation. The thermal efficiency of new dry process kiln can reach more than 50%, which is much higher than that of vertical kiln. Stabilized thermal system, improve the operation rate of equipment, compared with the same specification equipment, the operation rate increased by 10%, the output increased by 5%-10%, heat loss reduced by 15%.

Scale production: the daily output of a single production line can reach 5,000~10,000 tons of clinker.

Controllable environmental protection: Equipped with dust removal and denitrification system to meet the emission standards; wide adaptability of fuel (co-disposal of waste).

High clinker quality: high-temperature calcination ensures uniform mineral composition and standardized strength.

Low cost: the rotary kiln firing system adopts domestic advanced technology, such as the most advanced hydraulic stop wheel device, high metering precision metering piston pump, high precision control valve and contact graphite block sealing device. The structure is simple, the production process control is convenient and reliable, with few wearing parts and high operation rate.